webui-aria2/js/libs/dijit/popup.js.uncompressed.js
2012-05-01 19:52:07 +08:00

381 lines
13 KiB
JavaScript

//>>built
define("dijit/popup", [
"dojo/_base/array", // array.forEach array.some
"dojo/aspect",
"dojo/_base/connect", // connect._keypress
"dojo/_base/declare", // declare
"dojo/dom", // dom.isDescendant
"dojo/dom-attr", // domAttr.set
"dojo/dom-construct", // domConstruct.create domConstruct.destroy
"dojo/dom-geometry", // domGeometry.isBodyLtr
"dojo/dom-style", // domStyle.set
"dojo/_base/event", // event.stop
"dojo/keys",
"dojo/_base/lang", // lang.hitch
"dojo/on",
"dojo/_base/sniff", // has("ie") has("mozilla")
"dojo/_base/window", // win.body
"./place",
"./BackgroundIframe",
"." // dijit (defining dijit.popup to match API doc)
], function(array, aspect, connect, declare, dom, domAttr, domConstruct, domGeometry, domStyle, event, keys, lang, on, has, win,
place, BackgroundIframe, dijit){
// module:
// dijit/popup
// summary:
// Used to show drop downs (ex: the select list of a ComboBox)
// or popups (ex: right-click context menus)
/*=====
dijit.popup.__OpenArgs = function(){
// popup: Widget
// widget to display
// parent: Widget
// the button etc. that is displaying this popup
// around: DomNode
// DOM node (typically a button); place popup relative to this node. (Specify this *or* "x" and "y" parameters.)
// x: Integer
// Absolute horizontal position (in pixels) to place node at. (Specify this *or* "around" parameter.)
// y: Integer
// Absolute vertical position (in pixels) to place node at. (Specify this *or* "around" parameter.)
// orient: Object|String
// When the around parameter is specified, orient should be a list of positions to try, ex:
// | [ "below", "above" ]
// For backwards compatibility it can also be an (ordered) hash of tuples of the form
// (around-node-corner, popup-node-corner), ex:
// | { "BL": "TL", "TL": "BL" }
// where BL means "bottom left" and "TL" means "top left", etc.
//
// dijit.popup.open() tries to position the popup according to each specified position, in order,
// until the popup appears fully within the viewport.
//
// The default value is ["below", "above"]
//
// When an (x,y) position is specified rather than an around node, orient is either
// "R" or "L". R (for right) means that it tries to put the popup to the right of the mouse,
// specifically positioning the popup's top-right corner at the mouse position, and if that doesn't
// fit in the viewport, then it tries, in order, the bottom-right corner, the top left corner,
// and the top-right corner.
// onCancel: Function
// callback when user has canceled the popup by
// 1. hitting ESC or
// 2. by using the popup widget's proprietary cancel mechanism (like a cancel button in a dialog);
// i.e. whenever popupWidget.onCancel() is called, args.onCancel is called
// onClose: Function
// callback whenever this popup is closed
// onExecute: Function
// callback when user "executed" on the popup/sub-popup by selecting a menu choice, etc. (top menu only)
// padding: dijit.__Position
// adding a buffer around the opening position. This is only useful when around is not set.
this.popup = popup;
this.parent = parent;
this.around = around;
this.x = x;
this.y = y;
this.orient = orient;
this.onCancel = onCancel;
this.onClose = onClose;
this.onExecute = onExecute;
this.padding = padding;
}
=====*/
/*=====
dijit.popup = {
// summary:
// Used to show drop downs (ex: the select list of a ComboBox)
// or popups (ex: right-click context menus).
//
// Access via require(["dijit/popup"], function(popup){ ... }).
moveOffScreen: function(widget){
// summary:
// Moves the popup widget off-screen.
// Do not use this method to hide popups when not in use, because
// that will create an accessibility issue: the offscreen popup is
// still in the tabbing order.
// widget: dijit._WidgetBase
// The widget
},
hide: function(widget){
// summary:
// Hide this popup widget (until it is ready to be shown).
// Initialization for widgets that will be used as popups
//
// Also puts widget inside a wrapper DIV (if not already in one)
//
// If popup widget needs to layout it should
// do so when it is made visible, and popup._onShow() is called.
// widget: dijit._WidgetBase
// The widget
},
open: function(args){
// summary:
// Popup the widget at the specified position
// example:
// opening at the mouse position
// | popup.open({popup: menuWidget, x: evt.pageX, y: evt.pageY});
// example:
// opening the widget as a dropdown
// | popup.open({parent: this, popup: menuWidget, around: this.domNode, onClose: function(){...}});
//
// Note that whatever widget called dijit.popup.open() should also listen to its own _onBlur callback
// (fired from _base/focus.js) to know that focus has moved somewhere else and thus the popup should be closed.
// args: dijit.popup.__OpenArgs
// Parameters
return {}; // Object specifying which position was chosen
},
close: function(popup){
// summary:
// Close specified popup and any popups that it parented.
// If no popup is specified, closes all popups.
// widget: dijit._WidgetBase?
// The widget, optional
}
};
=====*/
var PopupManager = declare(null, {
// _stack: dijit._Widget[]
// Stack of currently popped up widgets.
// (someone opened _stack[0], and then it opened _stack[1], etc.)
_stack: [],
// _beginZIndex: Number
// Z-index of the first popup. (If first popup opens other
// popups they get a higher z-index.)
_beginZIndex: 1000,
_idGen: 1,
_createWrapper: function(/*Widget*/ widget){
// summary:
// Initialization for widgets that will be used as popups.
// Puts widget inside a wrapper DIV (if not already in one),
// and returns pointer to that wrapper DIV.
var wrapper = widget._popupWrapper,
node = widget.domNode;
if(!wrapper){
// Create wrapper <div> for when this widget [in the future] will be used as a popup.
// This is done early because of IE bugs where creating/moving DOM nodes causes focus
// to go wonky, see tests/robot/Toolbar.html to reproduce
wrapper = domConstruct.create("div",{
"class":"dijitPopup",
style:{ display: "none"},
role: "presentation"
}, win.body());
wrapper.appendChild(node);
var s = node.style;
s.display = "";
s.visibility = "";
s.position = "";
s.top = "0px";
widget._popupWrapper = wrapper;
aspect.after(widget, "destroy", function(){
domConstruct.destroy(wrapper);
delete widget._popupWrapper;
});
}
return wrapper;
},
moveOffScreen: function(/*Widget*/ widget){
// summary:
// Moves the popup widget off-screen.
// Do not use this method to hide popups when not in use, because
// that will create an accessibility issue: the offscreen popup is
// still in the tabbing order.
// Create wrapper if not already there
var wrapper = this._createWrapper(widget);
domStyle.set(wrapper, {
visibility: "hidden",
top: "-9999px", // prevent transient scrollbar causing misalign (#5776), and initial flash in upper left (#10111)
display: ""
});
},
hide: function(/*Widget*/ widget){
// summary:
// Hide this popup widget (until it is ready to be shown).
// Initialization for widgets that will be used as popups
//
// Also puts widget inside a wrapper DIV (if not already in one)
//
// If popup widget needs to layout it should
// do so when it is made visible, and popup._onShow() is called.
// Create wrapper if not already there
var wrapper = this._createWrapper(widget);
domStyle.set(wrapper, "display", "none");
},
getTopPopup: function(){
// summary:
// Compute the closest ancestor popup that's *not* a child of another popup.
// Ex: For a TooltipDialog with a button that spawns a tree of menus, find the popup of the button.
var stack = this._stack;
for(var pi=stack.length-1; pi > 0 && stack[pi].parent === stack[pi-1].widget; pi--){
/* do nothing, just trying to get right value for pi */
}
return stack[pi];
},
open: function(/*dijit.popup.__OpenArgs*/ args){
// summary:
// Popup the widget at the specified position
//
// example:
// opening at the mouse position
// | popup.open({popup: menuWidget, x: evt.pageX, y: evt.pageY});
//
// example:
// opening the widget as a dropdown
// | popup.open({parent: this, popup: menuWidget, around: this.domNode, onClose: function(){...}});
//
// Note that whatever widget called dijit.popup.open() should also listen to its own _onBlur callback
// (fired from _base/focus.js) to know that focus has moved somewhere else and thus the popup should be closed.
var stack = this._stack,
widget = args.popup,
orient = args.orient || ["below", "below-alt", "above", "above-alt"],
ltr = args.parent ? args.parent.isLeftToRight() : domGeometry.isBodyLtr(),
around = args.around,
id = (args.around && args.around.id) ? (args.around.id+"_dropdown") : ("popup_"+this._idGen++);
// If we are opening a new popup that isn't a child of a currently opened popup, then
// close currently opened popup(s). This should happen automatically when the old popups
// gets the _onBlur() event, except that the _onBlur() event isn't reliable on IE, see [22198].
while(stack.length && (!args.parent || !dom.isDescendant(args.parent.domNode, stack[stack.length-1].widget.domNode))){
this.close(stack[stack.length-1].widget);
}
// Get pointer to popup wrapper, and create wrapper if it doesn't exist
var wrapper = this._createWrapper(widget);
domAttr.set(wrapper, {
id: id,
style: {
zIndex: this._beginZIndex + stack.length
},
"class": "dijitPopup " + (widget.baseClass || widget["class"] || "").split(" ")[0] +"Popup",
dijitPopupParent: args.parent ? args.parent.id : ""
});
if(has("ie") || has("mozilla")){
if(!widget.bgIframe){
// setting widget.bgIframe triggers cleanup in _Widget.destroy()
widget.bgIframe = new BackgroundIframe(wrapper);
}
}
// position the wrapper node and make it visible
var best = around ?
place.around(wrapper, around, orient, ltr, widget.orient ? lang.hitch(widget, "orient") : null) :
place.at(wrapper, args, orient == 'R' ? ['TR','BR','TL','BL'] : ['TL','BL','TR','BR'], args.padding);
wrapper.style.display = "";
wrapper.style.visibility = "visible";
widget.domNode.style.visibility = "visible"; // counteract effects from _HasDropDown
var handlers = [];
// provide default escape and tab key handling
// (this will work for any widget, not just menu)
handlers.push(on(wrapper, connect._keypress, lang.hitch(this, function(evt){
if(evt.charOrCode == keys.ESCAPE && args.onCancel){
event.stop(evt);
args.onCancel();
}else if(evt.charOrCode === keys.TAB){
event.stop(evt);
var topPopup = this.getTopPopup();
if(topPopup && topPopup.onCancel){
topPopup.onCancel();
}
}
})));
// watch for cancel/execute events on the popup and notify the caller
// (for a menu, "execute" means clicking an item)
if(widget.onCancel && args.onCancel){
handlers.push(widget.on("cancel", args.onCancel));
}
handlers.push(widget.on(widget.onExecute ? "execute" : "change", lang.hitch(this, function(){
var topPopup = this.getTopPopup();
if(topPopup && topPopup.onExecute){
topPopup.onExecute();
}
})));
stack.push({
widget: widget,
parent: args.parent,
onExecute: args.onExecute,
onCancel: args.onCancel,
onClose: args.onClose,
handlers: handlers
});
if(widget.onOpen){
// TODO: in 2.0 standardize onShow() (used by StackContainer) and onOpen() (used here)
widget.onOpen(best);
}
return best;
},
close: function(/*Widget?*/ popup){
// summary:
// Close specified popup and any popups that it parented.
// If no popup is specified, closes all popups.
var stack = this._stack;
// Basically work backwards from the top of the stack closing popups
// until we hit the specified popup, but IIRC there was some issue where closing
// a popup would cause others to close too. Thus if we are trying to close B in [A,B,C]
// closing C might close B indirectly and then the while() condition will run where stack==[A]...
// so the while condition is constructed defensively.
while((popup && array.some(stack, function(elem){return elem.widget == popup;})) ||
(!popup && stack.length)){
var top = stack.pop(),
widget = top.widget,
onClose = top.onClose;
if(widget.onClose){
// TODO: in 2.0 standardize onHide() (used by StackContainer) and onClose() (used here)
widget.onClose();
}
var h;
while(h = top.handlers.pop()){ h.remove(); }
// Hide the widget and it's wrapper unless it has already been destroyed in above onClose() etc.
if(widget && widget.domNode){
this.hide(widget);
}
if(onClose){
onClose();
}
}
}
});
return (dijit.popup = new PopupManager());
});